@inbook{Bryan2004,
author = {Bryan, T.},
title= {Population estimates},
year = {2004},
doi = {10.1016/B978-012641955-9/50054-0},
editor = {Siegel, J.S.},
editor = {Swanson, D.A.},
booktitle = {The methods and materials of demography},
address = {Amsterdam},
publisher = {Elsevier},
pages = {523--560},
}